Ventilator.



VENTILATOR.

APPLICA-HDN HLED APR.3.|9\1.

Patented Mar. 4,1919.

INVENTOP.

WlTN ESSES Vl B ATTOR N EY PETER w. TELIN, or NEW YoEK MILLS, MINNESOTA.

vENT'ILAToE.

Specification of Letters Patent.

Patented Mar. 4L, 1919.

Application led April 3, 1917. Serial No. 159,453.

ToaZZ whom, t may concern:

Be it known that I, PETER W. TELIN, a citizen of the United States, residing at New York Mills, in the county of Ottertail and State of Minnesota, have invented certain new and useful Improvements in Ventilators, of which the following is a specification.

My invention relates `to ventilators and more )articularly to a ventilator adapted foiI use in a window and the principal'object thereof is to provide a construction of this character which is adjustable to window frames of different widths.

A further object of the invention is to provide a window ventilator which will allow the maximum amount of air to enter the room and will positively prevent the ingress of dirt and other foreign matter.

A still further object is to provide a ventilator for windows which consists of a pair of slidably engaged frames which may be easily and readily adjusted to the window frame.

Another object is to provide a ventilator which embodies fabric sheets that' are mounted in a manner which will prevent the same from being torn.

It is another object of my invention to construct a device of this character which will positively exclude flies and other insects from the room having the device applied in a window thereof.

The final general object of the present invention is to provide a longitudinally adjustable window ventilator which is simple in construction consists of few easily assembled parts, which is highly eicient in use and which can be manufactured and placed on the market at a minimum cost.

The above general objects and others will be set forth in the following description, illustrated in the accompanying drawing and the inventive idea. explicitly defined in the appended claims.

My improved ventilator embodies novel formations arrangements of coperating parts and details which will be hereinafter specifically referred to and illustrated in the accompanying drawing in which,

Figure 1 is a side elevation of my improved ventilator in operative position in a winden frame,

Fig. 2 is a ventilator.

tional view through the same and,

i Fig. L is a vertical transverse sectionalv view through one of the sections.

. Referring tothe drawing wherein like characters ofk reference indicate like parts throughout the several views the letter A designates thel usual window frame that comprises the usual sill, side rails and vertically movable sash. i Y

In its `preferred embodiment, my improved ventilator consists of two open. rec tangular frames slide-bly connected together. These 4frames, designated in the drawings by the numerals 5 and 6 are duplicate in construction and may be cast or formed from sheet metal as desired. Each frame consists of a bottom wall 7 and outer and innerpside walls 8 andl 9. The side walls 8 and 9 are spaced apart to define an intervening channel 10 extending entirely around the frame and opening into one side thereof. The inner side wall 8 is bulged outwardly adjacent the wall 7 to provide a guide rib or ledge 11 which extends entirely around the inside of the frame as shown to advantage in Figs. 3 and 4.

The fabric covering for each frame, indicated at 12, consists of a sheet of muslin or other Vfabric stretched across one side of the frame and having the marginal edges thereof secured in the channel 10. Owing to the provision 0f the guide rib 11 it will be noted in this connection that the channel 10 is substantially L-shaped in cross section and therefore when securing the cover in place the extreme edges of this cover will be secured in the extended portion of the channel formed by the rib 11 and secured therein by forcing the walls of the channel together. To provide for assembling the frame, a guide plate 13 is secured to one end` of each frame and` is provided with notches 14 formed in the ends thereof for engagement with the ribs 11 of the remainin frame.

perspective of my improved vn practice, the frames are assembled as i mailling traine with the notches 14e of said plate acconnnodating said rib to guide the saine during sliding movement and to prevent separation thereof. These guide plates 13 also serve as stops to limit sliding movement of the frame and further, by engaging the fabric covering i2 will prevent flies orV other insects from passing between the ends of the sections.

It Will be manifest from the above dis closure that the sections may be moved longitudinally with respect to each other so as to t any size Window and that the device may be constructed in any size so as to fit in a valise or the like so as to permit vthe same being carried around by travelers.

This disclosure isv merely illustrative and it is to be understood that the inventive idea can be embodied in constructions other than the one herein specified and illustrated and that I reserve the right to make such legitimate changes and modifications as may be fairly embodied in the scope of the appended claims.

What is claimed is:

1. A ventilator comprising a pair of open rectangular trames slidably connected together, fabric coverings for said frames, each of said trames having a continuous L-shaped channel opening into one side thereof to receive the edges of said covering,

Genies of this patent may be obtained for five c ents the walls of said channel being forced into binding engagement with the edges of the covering to retain the same' therein.

2. A ventilator comprising a pair oi open rectangular frames, fabric coverings for said frames, guide ribs extending along the inside of each frame, a stop plate secured to one end of each frame and having its end notched for engagement with the guide ribs oi the. other frame.

3. A ventilator comprising a pair of open rectangular frames, fabric covering for said frames, each of sail frames having a continuous channel opening into one side thereof, to receive 'the edges ofV the coverings, one wall of the said channel being bulgecl inwardly to receive the extreme edge of the covering and to provide a guide rib extending along the inside of the frame, and a stop plate carried by the frame for engagement with the remaining frame, each of said plates being provided With notches formed in the ends thereof for sliding engagement with the guide ribs extended along the inside of the remaining frame.

In testimony whereof I atiix my signature in presence ot two Witnesses.. Y Y

kPETER W. TELIN. Witnesses CHAS.V G. I-Irne,V

RICHARD, HAERUDY.

each, by addressing the iimmissioner of Iatents.

Washington, D. G. 

